Experimental study on wear failure course of gas-valve/valve-seat in engine
Experimental study on wear failure course of gas-valve/valve-seat in engine作者机构:School of Mechanical and Electrical Engineering Central South University Changsha 410083 China Department of Mechanical Engineering Jiangxi University Science and Technology Ganzhou 341000 China School of Mechanical and Electrical Engineering Central South University Changsha 410083 China
出 版 物:《Journal of Central South University of Technology》 (中南工业大学学报(英文版))
年 卷 期:2005年第12卷第Z1期
页 面:243-246页
核心收录:
学科分类:080703[工学-动力机械及工程] 0806[工学-冶金工程] 08[工学] 0807[工学-动力工程及工程热物理]
基 金:中南大学校科研和教改项目 YouthFoundation of Hunan Province Education Bureau(04B035)
主 题:gas-valve/valve-seat wear failure course micro-crack fatigue spalling
摘 要:The wear failure course of gas-valve/valve-seat in engine was investigated with a simulating tester. The results show that the failure of the contact conical surface is mainly caused by the elastic and plastic deformation and the fatigue micro-crack and spalling. The creep-deformation and corrosion atmosphere accelerated wear failure course at the high temperature. The wear failure course of the gas-valve/valve-seat in engine follows general wear rules of mechanical elements, but the rate of wear in the sharp wear stage is faster.